Gas burner



H. E. MILLS Sept. 25, 1945.

GAS BURNER Filed Nov. l, 1941 INVENTOR-` Herberf E. MIL/.5

Patented Sept. 25, 1945 GAS BURNER Herbert E.' Mills, Cleveland, Tenn.,assignor, by

mesne assignments, to Mills Engineeringr Company, Detroit,Mich., apartnership Application November 1, 1941, Serial 160.417.535

2 Claims. .(Cl. 158-116) This invention relates to gas burners and isparticularly adapted although not limited for use as a burner of acooking range.

A principal object of the invention is .to Drovide a novel and improvedtype Iof gas burner.

Another object of the invention is to providel a gas burner with aremovable refractory or ceramic burner head.

Another object of the invention is to provide a novel and convenientassembly of a gas burner having a. removable head.

Another object of the invention is to provide a dependable andinexpensive means for securing a refractory or ceramic burner head tothe main bodythereof.

Other objects and advantages of the invention will be apparent from aconsideration of the following specification taken in conjunction withthe accompanying drawing of which there is one sheet, and wherein: .A

Fig. l is a plan view of a burner embodying the invention;

Fig. 2 is a vertical sectional view taken along the line 2-2 of Fig. 1;

Fig. 3 is a bottom plan view of the ceramic burner head; and

Fig. 4 is a sectional view taken in a plane along the line 4-4 of Fig.2, looking in the direction of the arrows. s.

The burner I as illustrated comprises an annular hollow section or partI2, a tubular part or conduit I4 for supplying fuel to the annular partl2, an air valve I6 adapted to be operatively and removably associatedwith a nipple I8 of a gas supply manifold which is adapted to supply gasto the interior of the conduit I4 wherein the same is mixed with airadmitted through the valve I6.

The hollow annular part l2I of the burner is formed of two separablemembers 20 and 22. The member 20 may bel formed integral with tubularpart or conduit I4 in a casting and form the main body member of theburner. The main body part 20 of the burner forms an annular gasconducting channel 24 open at the top and which is adapted to haveremovably secured thereto the removable refractory burner cap or head22.

The burner cap or head 22 comprises an integral member formed of ceramicor refractory or other material and may be formed to provide a pluralityof vertically extending burner ports 26 and a series of radiallyextending grooves '28 on the under face 20 of said memberand at theperiphery thereof. The face 30 which is relieved by at the upper end andat the outer periphery of the member 20.

The inner periphery of the member 20 is formed ,to provide an annularplane surface 34 which forms a seat for a complementally shaped surface-36 formed on the under side of the member 22 at the inner peripherythereof. 'Ihe surface 36 is formed at the end of an annular projection33 which depends from the upper part of the member 22. Outwardly of thesurface 34 a well 40, formed in part by an upstanding annular wall 42 ofthe member 20, is provided for receiving and retaining a sealing mediumor compound such as cement indicatedV at 44. Before assembly of the head22 to the member 2D the well 44 is lled with cement and the surfacesif34and 36 also may be covered with f cement. When the surfaces 34 and 36are brought together by the clamping means hereinafter described, thecement will be squeezed out from between the surfaces 34 and 36 untilthe surface seats on the surface 32. A film of cement indicated at 46preferably remains between the surfaces 34 and 36 for sealing or bondingthe same together, While the well 44 which is illled with the grooves 28is arranged in "a plane and is adapted to be seated on a plane surface32 formed cement will also'provide a further seal between the outersurface of the annular part 38 and the inner surface of the wall 42.

TheA thickness of the film 46 of the sealing compound 44 will, ofcourse, depend upon the clearance between the surfaces 34 and 36 whenthe surface 30 is seated on the surface 32. Preferably theysurfaces 30and 36 of the refractory member 22 are spaced a distance slightly lessthan the distance ybetween the faces 34 and 32 of the member 20 so as toallow for hunted variations in the manufacture of these parts.

The refractory member 22 may be provided with two or more inwardlyextending lugs 50 projecting inwardly from the wall ofV the portion 38thereof. These lugs 50 form a seat for a U- shaped clamping or barmember 52 which is prof vided with a hole through which a screw 54depends. The screw 54 may be provided with a kerf 56.4 A clamping memberor bar seated against an annular shoulder 62 formed on the -body 20extends across the central opening in the body and is provided with anopening through which the screw 54 extends. Below the bar or strip 60 anut 64 threadedly secured to the threaded part of the screw54 isprovided for holding the strip 60 in position against the shoulder 62.When thescrew 54 is tightened the spaced clamping members 52 and 60bearing :ilk against the parts of the head 22 and the body 20 willsecurely clamp the same in operative relationship. I

The radially extending grooves 28 formed on the face 30 cooperate withthe upper surface 32 of the member 20 to form a series'of gas emittingports at the outer periphery of the burner, while the ports 26 formed inthe member 2B provide an inner series of gas emitting ports around thecentral opningvin the burner. The central opening in the burner isformed by the' annular portion 38 of the head 22 and the similarlyshaped portion of the body 20 below the portion 38. Except for the spaceoccupied by the clamping members 52 and Sli, the central opening in theburner is unobstructed and therefore available to supply air to theburner ports 26.

The refractory or ceramic material of which the burner head 22 is formedis a fused clay which has heat resisting qualities so as to be resistantto deterioration resulting from the burning of gas at the ports 28 and2B. This material when fused is frangible and cannot be successfullythreaded. 'I'he assembly herein illustrated provides a very dependableand simple construction for a gas burner having a refractory head. Theparticular form of the :burner and the arrangement of the ports may, ofcourse, be varied.

While the invention has been described with some detail, it is to beunderstood that the description is for the purpose of illustration onlyand is not definitive of the limits of the inventive idea. The right isreserved to make such' changes in the details of construction andarrangement of parts as will fall within the purview of the attachedclaims.

I claim: v

1. In a gas burner a body member forming a part of a gas supply passageand having a pair of seats, one on each side of said passage. a headmember'having seats adapted to cooperate with said seats of said bodymem-ber for completing said passage, said head member being,

formed with gas emitting ports communicating with said passage, meansproviding a well for sealing material adjacent one of said seats andformed by portions of said members, the seats of said body member beingspaced vertically a dis- `"tance at least slightly greater than theseats ot said head member, clamping means for securing said memberstogether, said clamping means including spaced bars, the ends of whichbear against said members, a threaded member reacting against the centerof said bar on said head member and threaded means reacting against thebar associated with said body member and coacting with said threadedmember to hold said body and head members in operative relationship. 2.In a gas burner a body member having an annular channel forming a partof a gas supply passage and having a pair of spaced, continuous,marginal seats, one arranged on each side of said passage, a head memberhaving spaced 'seats adapted to cooperate with said seats of said bodymember for completing said passage, said head member being formed withgas emitting ports communicating with said passage. the seats of saidbody member being relatively spaced a distance slightly greater than therelative spacing of the seats of said head member, sealing meanscooperable with those seats of said body and head members whichl due tothe relative spacing of said seats, do not contact eachr other, andclamping means for securing said members together, said clamping meansincluding spaced elongated clamping members. the edges of which bearagainst portions of said members, said clamping members being separablefrom said members, a threaded member reacting against an intermediatepart of that clamping member associated cwith said head member andthreaded means reacting against that clamping member associated withsaid threaded member to hold said head and body members in operativerelationship.

HERBERT E. MILLS.

